National Museum of Nuclear Science & History
Beers worked for Stone and Webster Engineering Corporation.
John Smith was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Paul Petretzky worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Hans von Halban (1908-1964) was an Austrian born French physicist. He finished his studies in 1934. He joined nuclear physicist Niels Bohr in Copenhagen, where he and Otto Frisch discovered that heavy water had very little neutron absorption compared to normal water.
